Estimation of Actual People Flow in Urban Area from Aggregated Data

摘要

Recently, the needs of disaggregated positional information are more and more rising in terms of grasp of traffic conditions, support to marketing, emergency responses just after earthquake, or etc. However, secrecy of the disaggregated data is very high, so it will take longer that many people will be able to use the data. Thus in this study, for promoting the utilization of the data, we tried to construct almost actual people flow dataset in Shizuoka urban area by estimating people flow from person trip survey data and assimilating observed value to the estimated model based on data assimilation method. Moreover, the validity of this method was examined by comparing with true value.